IAI America SCON-C - Manual (Page 66)

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3.9 Connecting the Regenerative Unit (RB)
Regenerative energy produced when the actuator decelerates to a stop or moves downward in vertical
installation is absorbed by means of the capacitor or resistor provided in the controller. If the produced
regenerative energy cannot be fully absorbed by the controller, an overheat error (error code: 0CA) will generate.
If this is the case, connect one or more regenerative resistance units externally.
3.9.1 Number of Units to Be Connected
Guideline for number of units to be connected
Motor wattage
Horizontal installation Vertical installation
Number of regenerative resistance
units to be connected
~ 100 W ~ 100 W Not required
~ 400 W, 200 S, 300 S ~ 400 W, 200 S, 300 S 1
~ 750 W ~ 750 W 2
* The above are reference values when the actuator is moved back and forth at an operation duty of 50%
based on the rated acceleration/deceleration, rated load and 1000-mm stroke.
* If the operating duty exceeds 50%, the applicable number of regenerative units shown in the table above
must be increased.
The maximum number of external regenerative resistance units that can be connected is as follows:
Less than 400 W --- 2 units
400 W or more --- 4 units
(Never connect external regenerative resistance units more than the limits shown above, as it may result in
system failures.)
3.9.2 Connection Method
The figure below illustrates how one regenerative unit, and multiple units, should be connected, respectively.
When connecting one regenerative unit, connect the unit using cable [1] explained in 3.9.3. When connecting
two or more regenerative units, connect the controller with the first regenerative unit using cable [1], and connect
the adjacent regenerative units using cable [2].
[1]
[2] [2]
[1]